Image scaling apparatus
December 23, 2011. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesMagnification/demagnification apparatus and method Device for electrical variable magnification of document image Resolution conversion of bitmap images using error term averaging Image reading and/or recording apparatus with enlarging and reducing function Image processing apparatus using approximate auto correlation function to detect the frequency of half-tone image data Address token based image manipulation Method of and apparatus for generating look-up table data Image processing apparatus capable of smooth multi-area variable magnification processing Digital image interpolator with multiple interpolation algorithms Method of interpolating pixel values Patent #: 5025405 InventorsAssigneeApplicationNo. 812334 filed on 12/23/1991US Classes:358/451, Picture size conversion358/1.9Attribute controlExaminersPrimary: Brinich, StephenAttorney, Agent or FirmForeign Patent References
International ClassG06F 015/20AbstractAn image processing system for altering the size of an image represented by a plurality of input video signals including a controller for producing a scale factor and a scale factor valid signal. The controller also includes a padder which is used to increase the accuracy of the scale factor during the operation of the controller. The signals generated by the controller are passed to an interpolator suitable for producing an output signal as a function of one or more of the input video signals in response to the scale factor and scale factor valid signal.Field of SearchPicture size conversion | |
